Band-saw-filing machine.



H. HESTAND da C. P. DAYTON.

BAND SAW FILING MACHINE. APPLIGATION FILED JUNE zo, 1911.

2 SHEETS-SHEET 1.

COLUMBIA PIANNRAPH mnwAlNlfoN. D. C.

Pantea sept. 17,1912.

H. HESTAND L C. F. DAYTON.

- BAND SAW FILING MACHINE.

APPLICATION FILED .TUNE 29, 1911'.

wm m mw mi@ wwwa/ww @www UNTED `STATES PATENT FFICE.

HARDY HESTAND ANI) CHARLES F. DAYTON, OF CHICKASHA, OKLAHOMA, ASSIGNORS T0 GRANVILLE M. CARR AND RODOLPHUS H. JONES, 0F CHICKASHA, OKLAHOMA.

BAND-SAW-FILING MACHINE.

To allwhom t may concern.'

Be it known 4.that we, HARDY HESTAND and CHARLES F. DAYTON, citizens of the United States, residing at Chickasha, in the county of Grady and State or" Oklahoma, have invented certain new and useful Improvements in Band-Saw-Filing Machines; and we do decla-re the following to be a full, clear, .and exact description of :the invention, such as will enable others skilled in the art to which it appertafins to make and use the same.

This invention -relates to improvements in band saw filing machines.

`@ne `object of the invention is to provide a band saw tiling machine adapted to file a saw without removing it from the sawing machine.

Another object is to provide a saw tiling machine having adjustable means for automatically feeding the saw to bring the successive teeth thereon into position for engagement by the file.

A further object is to provide .a machine l of this character having means whereby the tile is swung out of the way and held in position to prevent the same from engaging the saw on the return stroke of the file.

With these and other objects in view, :the invention consists of certain novel `features of construction, .combination and arrange` 3 is a .-top plan view.; Fig. 11 isa vertical cross 1 section on the line 4-4 of Fig. l; Fig. 5 is a similar view on the line 5-5 `of Fig. 2; Fig. 6 is a central vertical lngitudinal fsection of the le carriage.

`Our improved saw unaehine comprises a base plate 1 having .secured thereto a series of vertically disposed supporting posts 2, to which at one end of the machine are secured a pair of horizontally disposed bearing plates 3 to the rearwardly projecting sends of which are secured Ibearings 4 in which is revolubly mounted a 1era-nk sha-ftI 5. On oneend ot the crank shaft 5 is'secur-.ed

a fly wheel 6 to which is connected a crank handle 7 whereby the shaft may be turned. Secured to the posts l2 at the opposite end of lSpecification of Letters Patent.

`Application filed June y'29, 1911.

Patented Sept. 17,1912.

Serial No. 635,947.

the machine are longitudinally disposed parallel carriage supporting and guiding bars 8 Von which is slidably mounted a le carriage 9, said carriage comprising a plate 10, on the lower side of which are arranged "l sockets lt adaptedto receive the stem of the tile. The file when thus engaged with the .socket at one end of the holder is clamped into -operat1ve engagement therewith by means zot a collar 15 having arranged therein a set screw 16 whereby the sides of the split socket are drawn together `into rigid en gagement with the stem or shank of the tile as shown.

The holder 13 is pivotally secured tothe boss 12 and plate 10 of the carriage by a pivot bolt 17 arranged through the center of said parts as shown. The boss 12 is provided Von its upper side with a radially projecting annular flange and around said boss is arranged a coiled spring 18 one end 'oit which` is secured to the plate 10 of the carria-ge and the other end to the lower side of the lfile holder 13. When thus arranged the pressure of the spring is applied to the file i holder to swing the latter and the tile into forcible .engagement with the teeth of the saw on the forward stroke of the carriage.

In order to swing the file holder to a position for preventing the engagement of the iile with the saw on the return stro-ke of the carriage, we provide a holder actuating tapered roller 19 which is revolubly mounted on a suitable support-ing post 2O secured to o-ne oli' the guide bars 8 near the outer Yend thereof as shown. The roller 19 when thus arranged will be in posit-ion to be engaged by the collar 15 on the forward end of the file holder when the latter' has been moved by the carriage to the end oi the working stroke .and when thus engaged by said colla-r will force the holder and the le outwardly away from the saw. Whe-n the saw yand lfile have t-hus been forced laterally the saine are held in this position by means of a stop stud 21 the upper end of which is formed in the boss 12 andplate 10 and is holder around over the depressed upper end of the stud thereby holding the latter in a, depressed position and permitting j the spring to actuate the holder in the proper direction for engaging the file with the teeth Y of the saw while the carriage is being moved forwardly on its working stroke. As soon as the carriage has reached the limit of its working stroke, the collar 15 on the outer end of the file holder will come into engagement with the roller 19 which will force this end of the carriage laterally thus turning the same on its pivot bolt 17 whereupon the inner end of the holder will be moved from over the upper end of the stud 21 thus permitting the spring 22 to' force the latter up above the boss 12 whereby said stud forms a stop for the saw carriage and holds the latter in the inoperative position to which it was shifted by the roller 21. The file and holder are thus held in an inoperative position during the return stroke of the carriage and until the stud 21 is again brought into engagement with its depressing arm 23 which will depress the stud and permit the spring 18 to again swing the file holder and file into position to engage the latter with the saw teeth as soon as t-he carriage is again moved forward on its working stroke. Y

On the inner end of the file carriage is secured a depending bearing bracket 24; to which is connected the adjacent Vend of a carriage operating pitman rod 25 the opposite end of which is pivot-ally co-nnected with the crank shaft 5 whereby when the latter is revolved by the handle 7, the carriage will be reciprocated on its supporting and guiding bars 8 as will be readily understood. The pitinan rod 25 is preferably formed in adjustable telescopically engaged sections which are adjustably secured together by means of a set screw 26 arranged therein as shown. By thus constructing the pitman rod the length of the same may be increased or diminished and the position and movement of the carriage regulated. 'Ihe crank arm of the shaft 5 is also preferably slotted as shown and the end of the pitman rod 25 adjustably connected thereto, thereby providing means whereby the throw of the carriage is regulated.

In order to shift the saw to bring the successive teeth thereon into position to be engaged by the iile when the latterris reciprocated in the Ina-nner described, we provide a saw shifting plate or bar 27 which is arranged through vertically disposed slots or passages 28 formed Vin the supporting posts 2 along one side of the machine. The bar or plate 27 when thus arranged is pivot-ally connected to t-he centra-l post with which the bar is engaged and is thus adapted to be rocked in a vertical plane. On the forward or working end of the bar 27 is pivotally and adjustably secured a curved tooth engaging plate or pawl 29, said pawl being in the form of a spring` metal plate pivoted intermediate of its ends by a pivot bolt 30 to the forward end of the bar 27 and having in its inner end a transverse slot 31 with which and the adjacent portion of the bar 27 is engaged a clamping screw 32 whereby when the pawl 29 is adjusted on its pivot screw 30 to the desired position, said screw 32 is tightened up and the pawl thus fastened in its adjusted position' for engaging the teeth ofthe saw. Y

In order to rock t-he bar 27 at the proper time for engaging the pawl 29 with the teeth of the saw, we provide a pair of bar oper-l ating cams 33 and 34 one of which is'se cured to the adjacent end fof the crank shaft by means of a set screw 35 arranged through the cam and adapted to be screwed Y into engagement with the shaft whereby the cam is adjustably secured to the latter. The cam 34 is adjustably secured to the adjacent end of the bar 27 by a fastening screw Y36 in position to be engaged by the cani 33 on the crank shaft when the latter is revolved thereby rocking` the bar 27 to swing the outer end of the latter upwardly thus raising the saw to the distance kof one tooth at each revolution of the crank shaft. The rocker bar 27 is operated in the opposite direction to disengage the pawl 29 from the teeth of the saw and to swing the forward end of the arm downwardly by means of a spring 37 one end of which is secured to the rocker bar and the opposite end to the ad` jacent bearing bar 3 as shown( The cams 33 and 34 are arranged in such position with respect to the crank onthe shaft 5 that they will operate the bar 27 atA the proper time for raising the saw on the return stroke of the carriage. B adjustably connecting the cams to the s aft and bar, the throw of the latter may be regulated and the parts thus properly adjusted for shifting saws having different sizes of teeth.

In using our improved filing machine the same is clamped in position on the saw table and the saw quickly and easily filed without removing or disturbing the same nin any manner thereby greatly facilitating the l'- ing operation. i

From the foregoing description taken in ings, the construction and operation of the invention will be readily understood Without requiring a more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to withoutdeparting from the principle or sacrificing any of the advantages of the invention as defined in the appended claims.

Having thus described our invention, what we claim is:

l. A band saw iling machine comprising a sup-porting frame, a carriage slidably mounted therein, means to reciprocate said carriage, a lile holder pivotally mounted on said carriage, means to hold the file in operative engagement with the saw on the working stroke of the carriage, a roller disposed to engage said holder to swing it laterally and thereby disengage the file from the saw` when the carriage has reached the limit of its working stroke, a spring projected stop adapted to engage said holder during the return stroke of the carriage, a sto depressing arm for engagement with sai stop when the carriage has reached the limit of its return stroke, thereby releasing said le holder.

2. A band saw filing machine comprising a supporting frame, a carriage slidably mounted therein, means to reciprocate said carriage, a file holder pivotally mounted on said carriage, a spring connected with said iile holder and adapted to cause the same to hold the le in operative engagement with the saw on the working stroke of the carriage, a holder operating roller adapted to engage said holder to swing the same laterally to disengage the ile from the saw when the carriage has reached the limit of its working stroke, a spring projected stop pin adapted to engage said holder when moved laterally by said roller thereby lfastening the file holder in an inoperative position during the return stroke of the carriage, a stud depressing arm adapted to engage said stud when the carriage has reached the limit of its return stroke thereby releasing said .tile holder and permitting its spring to swing the same in position to again engage the tile with the saw on the working stroke of the carriage.

3. A band saw filing machine comprising a support-ing frame, a le operating carriage slidably mounted in said frame, a le holder pivotally mounted yon said carriage, a spring adapted to actuate said holder whereby the file is held in yielding engagement with the saw on the working stroke of the carriage, means to swing the file holder laterally and thereby disengage the lile from the saw when the carriage has reached the limit of its working stroke, a

stop to fasten said holder in an inoperative position during the returnstroke of the car` riage whereby the tile is prevented from engaging the saw, means to release said stop from said file holder when the carriage has reached the limit of its return stroke, a crank shaftrevolubly mounted in said frame, means tooperate said shaft, apitman rod adapted to operatively connect said crank shaft with said carriage, and an automatically operated saw feeding mechanism whereby the saw is shifted to bring the successive teeth thereon into position to be engaged by the file on the working stroke of the carriage. l

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

HARDY HESTAND. CHARLES F. DAYTON. Witnesses:

P. J. HARHAM, ORAH L. DEWS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

